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How to handle backslash in grep string

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# 1  
Old 06-18-2007
How to handle backslash in grep string
Hi ,
I am doing invert grep using -v but the string contain "/" which break the grep command and it do not skip the lines with "/" on it.
Diffu.txt
========
1159c1159
< <td align="right" valign="middle" class="paddingRight2px" id="featureListItemChannelButton7466">
---
> <td align="right" valign="middle" class="paddingRight2px" id="featureListItemChannelButton2505">
1168,1169c1168,1169
< document.getElementById( 'featureListItemChannelButton7466').innerHTML = '<img src="/images/buttons/playsm_disabled.gif" alt="Subscriber Only Channel" title="Subscriber Only Channel" class="playSm" border="0" height="20" width="20" \/><br \/><br class="v5" \/>';
< Element.addClassName( 'featureListItemChannelButton7466', 'contentUnAvail' );


DiffSkiplines.txt
===========
<td align="right" valign="middle" class="paddingRight2px" id="featureListItemChannelButton7466">
document.getElementById( 'featureListItemChannelButton7466').innerHTML = '<img src="/images/buttons/playsm_disabled.gif" alt="Subscriber Only Channel" title="Subscriber Only Channel" class="playSm" border="0" height="20" width="20" \/><br \/><br class="v5" \/>';
Element.addClassName( 'featureListItemChannelButton7466', 'contentUnAvail' );


cat /home/zabbix/public_html/diffu.txt| grep -v -f /home/zabbix/public_html/DiffSkipLines.txt returns

1159c1159
---
> <td align="right" valign="middle" class="paddingRight2px" id="featureListItemChannelButton2505">
1168,1169c1168,1169
< document.getElementById( 'featureListItemChannelButton7466').innerHTML = '<img src="/images/buttons/playsm_disabled.gif" alt="Subscriber Only Channel" title="Subscriber Only Channel" class="playSm" border="0" height="20" width="20" \/><br \/><br class="v5" \/>';

but it do not removes the line with document.getElement string as it has a backslash character before "/>".
Please let me know how to get rid of lines with backslash in it??


Regards,
Raj
# 2  
Old 06-18-2007
Don't cross post.

'\' is generic escape character in regular expressions.

Have you tried replacing "\" with "\\"
Last edited by porter; 06-18-2007 at 08:56 PM..
# 3  
Old 06-18-2007
how to do that??
# 4  
Old 06-18-2007
echo \\fred\\ | grep \\\\
# 5  
Old 06-18-2007
Can you explain with the two files which i have shown in the post?
# 6  
Old 06-18-2007
try replacing the line

Code:
title="Subscriber Only Channel" class="playSm" border="0" height="20" width="20" \/><br \/><br class="v5" \/>';

with

Code:
title="Subscriber Only Channel" class="playSm" border="0" height="20" width="20" \\/><br \\/><br class="v5" \\/>';

# 7  
Old 06-18-2007
Porter ,
Thanks i believe this will solve the problem until i come across any other issues..

Regards,
Raj
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